Program: AC629 Subarray(s): #1 Observer(s): Walter Brisken Operator(s): Sam Gilmore Date: Saturday, Apr 6 2002 Configuration: A User Number: 2179 Decommissioned: 16 Source File(s): 085C629 VLBI Ref. Ant: Observing Mode: Continuum VLB Antenna Pad: ** Weather Information ** Time Dew Point Temp. Wind Bar. Pressure 02Apr06 08:18:47 -11.6C 6.4C WSW at 0.5 m/s 788.9mbars 02Apr06 15:16:39 -10.9C 8C W at 2.3 m/s 787.5mbars 02Apr06 18:31:06 -3.5C 16.9C SW at 7.7 m/s 784.7mbars 02Apr06 18:53:52 -3.5C 16.9C SW at 7.7 m/s 784.7mbars Remarks: Operator comments for the above weather entries. Sky Cover is 80%. Stratusform type. Hazy. Sky Cover is 100%. Stratusform type. Hazy. Sky Cover is 100%. Stratusform type. Sky Cover is 100%. Stratusform type. ** Visibility Tape Information ** Tape # File # Time of Final Record: N16143 1 02Apr06 at 12:40:50 N16144 1 ** Monitor Tape Information ** Tape # File # Time of Final Record: N16160 1 Antenna(s) Used: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 ** Operator Comments ** 02Apr06 08:13:25 Starting program: AC629, observe file: 085C629. 02Apr06 08:17:50 On source 1331+305 with all available antennas. The band(s) used is(are) X band(s). 02Apr06 08:13:25 Antenna(s) 8 do not have good baseline positions determined for them because they were moved to their present location recently. In the analysis of your data would you please check for any baseline errors especially on these antennas and let the Data Analysts (email - analysts@nrao.edu) know what you find when there are significant baseline errors. Thank you in advance. 02Apr06 08:13:25 The on-line baseline parameters for antenna(s) 4 9 10 11 12 13 16 18 19 24 25 27 have recently been updated (prior to your observing run) to correct for errors resulting from their recent relocations. In the analysis of your data would you please check for any significant baseline errors especially on these antennas and let the Data Analysts (email - analysts@nrao.edu) know what you find when there are significant baseline errors. Thank you in advance. 02Apr06 08:13:25 Antenna 11 is in subarray 2 for a single dish VLBI experiment. 02Apr06 09:47:31 - 02Apr06 11:23:20 Form #: Other # of Ants: 1.00 Downtime: 95.82 Antenna(s) 10 - SERVO (Antenna ACU, Encoders, Translators) Problem(s); Possible elevation oscillation. Antenna parked. Observing Data: Lost 02Apr06 10:37:00 - 02Apr06 10:38:40 Form #: Other # of Ants: 0.50 Downtime: 0.83 Antenna(s) 7 - LOCAL OSC (Local Oscillator) Problem(s); The synthesizer did not set-up correctly on the AC side. Re-set via L6 overlay. Observing Data: Lost 02Apr06 12:33:00 - 02Apr06 12:35:10 Form #: Other # of Ants: 0.50 Downtime: 1.08 Antenna(s) 22 - LOCAL OSC (Local Oscillator) Problem(s); The synthesizer did not set-up correctly on the AC side. Re-set via L6 overlay. Observing Data: Lost 02Apr06 13:11:30 - 02Apr06 13:41:10 Form #: Other # of Ants: 1.00 Downtime: 29.67 Antenna(s) 8 - SERVO (Antenna ACU, Encoders, Translators) Problem(s); Possible azimuth oscillation. Antenna parked. Observing Data: Lost 02Apr06 15:16:39 **** Jim Campbell is your operator. **** 02Apr06 15:17:59 Ran a backup on the Modcomp partition where observe files are kept. 02Apr06 15:55:00 - 02Apr06 19:03:00 Form #: Other # of Ants: 1.00 Downtime: 188.00 Antenna(s) 8 - SERVO (Antenna ACU, Encoders, Translators) Problem(s); Antenna experiencing wrap confusion . Antenna parked. Observing Data: Lost 02Apr06 19:23:00 - 02Apr06 19:30:00 Form #: Weather # of Ants: 1.00 Downtime: 7.00 Antenna(s) 5 - SERVO (Antenna ACU, Encoders, Translators) Problem(s); Antenna auto stowed due to gusty winds. Observing Data: Lost 02Apr06 19:41:36 End of program AC629. Total Downtime = 322.4 minutes (1.7% of total time). AsciiFileOut Version: 1.11 -- Version Date: June 20, 1996